FEI Quanta FEG 250, User'S Operation Manual

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Software Control: Software Interface Elements
4-4
ADJUSTERS
allow to change parameters, such as contrast, brightness, gamma
etc. in a continuous way by pressing and dragging the middle adjuster
or clicking in the grey bar. They always have a label in the upper left
and right corners for readout information. Double-click the value in the
upper right corner enables to enter a precise value (and the unit in
particular cases) using the keyboard.
Exponential Adjuster
This is an exponential response adjuster – the further from the center
is the large adjuster button pulled, the larger is the relative change.
The adjuster button always snaps back to the center of the slider.
The middle adjuster button is for coarse adjustments, while the end
arrows are for fine adjustments (single step increments).
Linear Adjuster
Some adjusters have linear response like the small adjuster placed
below the exponential one has. Its button position always corresponds
to the actual parameter value within an available range.
Preset Adjuster
This kind of adjuster is used for values that have both a continuous
range, a list of presets and direct value editing to achieve total control.
The button on the left side of the adjuster toggles between modes:
• Drop down list:
clicking the -/+ buttons on the right of the drop down menu steps
through the pre-set values Up / Down in the list, but only shows
one value in the text area. Clicking the down-arrow rolls down the
whole list of values. If the list extends further than is visible, a scroll
bar appears. Clicking a value in the list enters it as an actual value
in the text area displayed at the top.
Double-clicking a value in the text area enables to edit it.
• Adjuster mechanism:
The adjuster has a fine control (see above).
Spinner
allows to change a parameter in an incremental way from a list of pre-
defined values by clicking on an arrow.